Week of Events
Topology Seminar: Mayuko Yamashita (Perimeter Institute for Theoretical Physics)
Title: Geometric engineering in Topological Modular FormsAbstract: “Geometric engineering” is a terminology in physics, referring to processes creating interesting QFTs out of simple pieces, by sequence of basic geometric processes. I will explain my ongoing project to mimic that in elliptic cohomology theory, guided by Segal-Stolz-Teichner paradigm. I will explain the progress on the cases […]
Analysis seminar: Bogdan Raita (Georgtown)
Title: Compensation phenomena for concentration effects via nonlinear elliptic estimatesAbstract: We study compensation phenomena for fields satisfying both a pointwise and a linear differential constraint. This effect takes the form of nonlinear elliptic estimates, where constraining the values of the field to lie in a cone compensates for the lack of ellipticity of the differential […]
Algebraic Geometry Preprint Seminar: Minghao Zhao
Title: Crepant resolutions of log-terminal singularities via Artin stacks (following Satriano--Usatine)
Number Theory Seminar: Rohit Kumar (Duke University)
Title: The Irregular Elliptic Stark Conjecture Abstract: In a joint work with Victor Rotger, we study the irregular elliptic Stark conjecture of Darmon, Rotger, and Lauder. The fixed data consists of a rational elliptic curve $E_f$ and 2-dimensional artin representations $rho_g,rho_h : text{Gal}(H/{mathbb{Q}}) rightarrow GL_2(L)$ such that the selmer group $text{Hom}_{G_{mathbb{Q}}}(rho_g otimes rho_h , E(H))$ […]
Geometric analysis seminar: Gregory R. Chambers
Title: Monotone sweepouts and minimal surfaces Abstract: In this talk, I will discuss the notion of monotone homotopies and sweepouts - what they are, when they exist, and why we care about them. In particular, we will show how they are related to the existence of minimal surfaces in certain noncompact settings, as well as recent […]